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Asterisk AEL Extensions Security Bypass

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Release Date:  2007-04-03    Views:  8,323

Secunia Advisory SA24694

Where:

From remote

Impact:

Security Bypass

Solution Status:

Vendor Workaround

Software:

CVE Reference(s):

Description


A security issue has been reported in Asterisk, which can be exploited by malicious people to bypass certain security restrictions.

The security issue is caused due to a problem within the AEL (Asterisk Extension Language) when generating switch extensions. Depending on the extension, an attacker may be able to guess and dial a special number, which could allow him to e.g. listen to the voicemails of other users.


Solution:
Fixed in the SVN repository.

Provided and/or discovered by:
Philipp Kempgen

Original Advisory:
http://bugs.digium.com/view.php?id=9316

http://lists.digium.com/pipermail/asterisk-dev/2007-March/026647.html

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Asterisk AEL Extensions Security Bypass

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